Uvarmicranones A and B, two new benzoquinones and cytotoxic constituents from the stems of Uvaria micrantha (A. DC.) Hook. f. & Thomson.
Nat Prod Res
; 35(24): 5643-5652, 2021 Dec.
Article
em En
| MEDLINE
| ID: mdl-32957800
ABSTRACT
Two novel benzoquinones, uvarmicranones A (1) and B (2), along with 15 known compounds (3 - 17) were isolated from the stems of Uvaria micrantha (Annonaceae). Their structures were elucidated by analyses of NMR and high-resolution mass data. A plausible biosynthetic pathway of uvarmicranone A (1) via Diels-Alder cycloaddition reaction was also proposed. Some isolated compounds were evaluated for their cytotoxic activities. Compounds 1, 14, and 15 showed moderate cytotoxic effects against T-cell acute lymphoblastic cells (MOLT-3), with IC50 values of 7.83 ± 0.83, 6.53 ± 1.01, and 4.20 ± 0.29 µM, respectively. Additionally, compound 15 exhibited moderate cytotoxicity against cervical carcinoma cells (HeLa) with an IC50 value of 7.00 ± 3.15 µM.
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Base de dados:
MEDLINE
Assunto principal:
Annonaceae
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Uvaria
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Antineoplásicos
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article